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Clinical Autonomic Research

, Volume 10, Issue 1, pp 23–28 | Cite as

Autonomic response to real versus illusory motion (vection)

  • Mitsuhiro Aoki
  • Kai V. Thilo
  • Peter Burchill
  • John F. Golding
  • Michael A. Gresty
Research Paper

Abstract

This study explored the cardiovascular responses to illusions of self-motion (vection) induced in normal subjects according to the hypothesis that vection may be a model for vertigo in vestibular disease. Responses were obtained from 10 men who were exposed to rapid tilts of 20° and 30° rolling from the upright position down to the right or left shoulder. These responses were compared with those evoked during the illusion of roll-tilt vection provoked by a torsionally rotating visual field. Comparisons were made between 10-second data epochs before and after stimulus onset. In response to vection, blood pressure (BP) in the radial artery rose consistently in six subjects, and in all of these, a pressor response to real tilt was also observed. The remaining four subjects consistently had decreased BP in response to vection, and their BPs were affected little by tilt. Subjects whose BP increased with vection and tilt may have been dominated by tendency to arousal, whereas those whose BP decreased may reveal the more appropriate response to tilt from the upright position, which is a decrease in BP. This may reflect individual stereotypes and differences in the relative contributions of somatosensory and vestibular control of autonomic regulation.

Key words

vertigo vection tilt blood pressure optokinetic 

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Copyright information

© Lippincott Williams & Wilkins 2000

Authors and Affiliations

  • Mitsuhiro Aoki
    • 1
  • Kai V. Thilo
    • 3
  • Peter Burchill
    • 3
  • John F. Golding
    • 2
  • Michael A. Gresty
    • 3
  1. 1.Department of OtorhinolaryngologyGifu University School of MedicineGifuJapan
  2. 2.Department of PsychologyUniversity of WestminsterLondonUK
  3. 3.Medical Research Council, Human Movement and Balance UnitNational Hospital for Neurology and NeurosurgeryLondonUK

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